Energy storage system with fire diffusion prevention device

Abstract

According to one embodiment of the present invention, an energy storage system having a device for preventing fire diffusion, comprises: a container having a plurality of storage space parts formed therein, the front and rear surfaces of the storage space parts communicating with each other and storing a storage case for storing a waste battery; a door, the upper end of which is rotatably coupled to the rear surface of the container, and which can lock the storage space according to the position of the lower end; and a water tank which is disposed adjacent to the rear surface of the container, and which, when the door is opened, accommodates the accommodation case accommodated in the accommodation space after the accommodation case falls down.

Description

Technical Field

[0001] The present invention relates to an energy storage system, and more particularly to an energy storage system with a device for preventing fire from spreading. Background Art

[0002] In order to achieve carbon neutrality ahead of schedule, the world is currently working hard to expand the popularization of electric vehicles. Taking 2030, when internal combustion engines are completely eliminated, it is predicted that the number of electric vehicles will increase exponentially.

[0003] The increase in the popularity of electric vehicles will also lead to an increase in the amount of "used batteries" discharged from electric vehicles, that is, waste batteries. According to the forecast of the Korea Institute for Environmental Policy Evaluation on the amount of waste batteries discharged, it will increase from 2,355 in 2023 to 8,321 in 2025, 29,508 in 2027, and 78,981 in 2029.

[0004] Such waste batteries can maintain 70-80% efficiency compared to batteries suitable for new electric vehicles, so they can be reused in other fields such as energy storage systems (ESS) besides electric vehicles. However, thermal runaway may occur due to various reasons such as damage to the separation membrane inside the waste batteries caused by mechanical damage and evaporation of the internal electrolyte, so a safer management solution is needed. Summary of the invention

[0005] Technical problem to be solved by the invention

[0006] The energy storage system with a fire spreading prevention device of the present invention provides an energy storage system using waste batteries.

[0007] Furthermore, when the temperature of a waste battery rises abnormally during use of the energy storage system, the waste battery with the abnormally increased temperature can be blocked from affecting other waste batteries by separating the space from adjacent waste batteries.

[0008] Furthermore, when a problem occurs in the power supply of the energy storage system, if the temperature of the waste battery rises abnormally, the waste battery with the abnormally increased temperature can be separated from other waste batteries to prevent the waste battery from having an impact on other waste batteries.

[0009] The technical problems to be solved by the present invention are not limited to the problems described above, and ordinary technicians in the technical field of the present invention should clearly understand other technical problems not described through the following description.

[0010] Technical solutions to the problem

[0011] An energy storage system with a fire spread prevention device according to an embodiment of the present invention includes: a container having a plurality of storage spaces formed therein, wherein the front and rear of the storage spaces are connected to accommodate a storage shell for accommodating waste batteries; a door, wherein the upper end portion of the door is rotatably coupled to the rear of the container and the storage space portion can be locked according to the position of the lower end; and a water tank, which is arranged adjacent to the rear of the container so that when the door is opened, the storage shell stored in the storage space portion falls down and is stored.

[0012] Preferably, according to an embodiment of the present invention, the front end bottom surface of the storage space portion of the energy storage system with a fire spread prevention device is formed higher than the rear end bottom surface of the storage space portion, and the storage shell is discharged through the back of the container when the door is opened, and the water tank stores cooling water.

[0013] Preferably, the multiple storage spaces of the energy storage system with the fire spread prevention device according to an embodiment of the present invention are separated from each other.

[0014] Preferably, according to one embodiment of the present invention, a door opening and closing frame is provided at the rear of the container of an energy storage system with a fire spread prevention device corresponding to the rear end bottom surface of the storage space portion, and the door opening and closing frame is provided with a door cylinder, which is composed of a hanging protrusion that is movably arranged up and down and contacts the lower end of the rear end of the door to limit the opening of the door, a metal piston coupled to the lower end of the hanging protrusion is provided inside the door cylinder, an elastomer that gives elastic force to the metal piston is provided between the metal piston and the inner surface of the door cylinder, and a piston control coil that moves the metal piston downward when power is supplied is provided on the bottom surface of the door cylinder, so that when the temperature of the storage space portion rises above a set temperature, the metal piston moves downward to open the door.

[0015] Preferably, according to one embodiment of the present invention, the interior of the elastomer of the energy storage system with a fire spread prevention device contains a fluid, which is composed of micro beads formed by a resin material so that when the temperature is above a set temperature, the fluid contained inside can be dissolved and discharged. A heat conduction plate that can conduct heat from the storage space is provided between the door cylinder and the storage space. The door cylinder is formed of a resin material so that when heat above a set capacity is conducted through the heat conduction plate, the fluid is dissolved and the micro beads can be discharged.

[0016] Preferably, according to one embodiment of the present invention, a storage shell of an energy storage system with a fire spread prevention device is provided with a terminal portion for providing power to waste batteries stored in the storage shell on one side, the terminal portion is composed of a shell terminal portion fixed to the storage shell and a system terminal portion connected to the system, a magnet is provided on the shell terminal portion, a terminal metal sheet is provided at a position of the system terminal portion corresponding to the magnet, and a terminal control coil for pushing the magnet when power is provided is provided at a position corresponding to the terminal metal sheet, so that when power is supplied to the terminal control coil, the shell terminal portion is separated from the system terminal portion.

[0017] Effects of the Invention

[0018] The energy storage system with a fire spread prevention device of the present invention has the following effects: waste batteries can be used to form the energy storage system, and when the temperature of the waste batteries constituting the energy storage system becomes abnormal, thermal runaway can be prevented from occurring.

[0019] Furthermore, the present invention has the following effect: when the temperature of one of the waste batteries constituting the energy storage system becomes abnormal, it can be spatially blocked from the other waste batteries, thereby preventing the other waste batteries from being damaged.

[0020] Furthermore, there is an effect that when a temperature abnormality occurs in one of the waste batteries constituting the energy storage system, thermal runaway can be prevented from occurring.

[0021] Furthermore, there is an effect that, even when a problem occurs in the power supply of the energy storage system and the waste batteries are heated to an abnormal temperature, the heated waste batteries can be separated.

[0022] The effects of the present invention are not limited to the effects described above, and those skilled in the art in the technical field of the present invention should clearly understand other effects that are not described through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front perspective view of an energy storage system with a fire spread prevention device according to an embodiment of the present invention.

[0024] Figure 2 for Figure 1 A rear perspective view of an energy storage system with a fire spread prevention device is shown in FIG.

[0025] Figure 3 for Figure 1 A cross-sectional view of the main parts of the container and the storage shell shown in FIG.

[0026] Figure 4 A three-dimensional view of a storage casing of an energy storage system having a device for preventing the spread of fire. DETAILED DESCRIPTION

[0027] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The same or similar technical features are given the same reference symbols regardless of the accompanying drawing symbols, and repeated description thereof will be omitted.

[0028] Furthermore, when describing the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description will be omitted. Furthermore, the drawings are only for facilitating the understanding of the concept of the present invention, and therefore, the concept of the present invention is not limited by the drawings.

[0029] The energy storage system with a fire spread prevention device of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Figure 1 A front perspective view of an energy storage system with a fire spread prevention device according to an embodiment of the present invention; Figure 2 for Figure 1 A rear perspective view of an energy storage system with a fire spread prevention device as shown in FIG. Figure 3 for Figure 1 A cross-sectional view of the main parts of the container and the storage shell shown in FIG. Figure 4 A three-dimensional view of a storage casing of an energy storage system having a device for preventing the spread of fire.

[0031] An energy storage system is a system that is internally configured with multiple batteries for storing surplus power and is capable of using electricity efficiently. According to this embodiment, the energy storage system with a fire spread prevention device (hereinafter referred to as the "energy storage system") uses waste batteries that have been replaced because their efficiency has decreased among batteries used in electric vehicles, etc.

[0032] Scrap batteries are batteries that have been used repeatedly, so they are more likely to experience thermal runaway due to physical shock, evaporation of electrolyte, etc., compared to new batteries. Therefore, battery management is important when using scrap batteries to form an energy storage system.

[0033] In view of this, the energy storage system of the present invention is formed by the following structure: a container 100, which accommodates a storage shell 200 for storing waste batteries; a door 130, which senses the temperature when charging and discharging the waste batteries inside the storage shell 200, and if the temperature rises above a set temperature, discharges the storage shell 200 from the container 100; a water tank 300, which is used to store the storage shell 200 discharged through the door 130, and stores cooling water to reduce the temperature of the rising waste batteries.

[0034] Reference Figure 1 A plurality of storage spaces 120 are formed inside the container 100 of the energy storage system, and the front and rear sides of the storage space 120 are connected to accommodate a storage shell 200 for storing waste batteries.

[0035] like Figure 1 As shown, a display panel 110 is provided on the upper front portion of the container 100 for checking the voltage, temperature, charge level, battery capacity and other states of the waste batteries in the storage housing 200 and controlling the charging voltage and current.

[0036] like Figure 2 As shown, a door 130 is provided at the back of the above-mentioned container 100, and its upper end is rotatably connected to the back of the container 100 so as to be able to lock the storage space portion 120, and if the lower end of the door 130 is close to the back of the container 100, the door 130 can lock the back of the storage space portion 120.

[0037] A water tank 300 is provided at the lower rear portion of the container 100 , and is disposed adjacent thereto so that when the door 130 is opened, the storage case 200 stored in the storage space 120 can be stored.

[0038] Thus, the storage case 200 discharged from the container 100 is separated from the container 100 and spatially separated, so that the waste batteries whose temperature rises in the storage case 200 do not affect other waste batteries in the container 100. Here, cooling water such as water having high specific heat is stored in the water tank 300 to cool the temperature of the waste batteries in the storage case 200, thereby controlling thermal runaway of the waste batteries in the water tank 300.

[0039] Reference Figure 3 In the storage space portion 120, the front end bottom surface of the storage space portion 120 is formed higher than the rear end bottom surface of the storage space portion 120, so that when the door 130 is opened, the storage shell 200 slides out of the storage space portion 120 and is discharged, and each storage space portion 120 is formed detachably to reduce the impact that may occur to the waste batteries with increased temperature before being discharged from the storage space portion 120.

[0040] Reference Figure 3 A door opening and closing frame 140 is provided at the rear of the container 100 corresponding to the rear bottom surface of the storage space 120. A door cylinder 142 is provided on the door opening and closing frame 140, which is provided with a hanging protrusion 142a that is connected to the rear lower end of the door 130 and restricts the opening of the door 130 and is movably arranged up and down. Therefore, when the hanging protrusion 142a moves upward, the rear lower end of the door 130 contacts the hanging protrusion 142a and cannot be opened. Only when the hanging protrusion 142a moves downward can the door 130 be opened.

[0041] Reference Figure 3In the enlarged view, a metal piston 142d coupled to the lower end of the hooking protrusion 142a is provided inside the door cylinder 142, and an elastic body 142e for imparting elasticity to the metal piston 142d is provided between the metal piston 142d and the inner surface of the door cylinder 142. Thus, when no external force is applied to the hooking protrusion 142a, the hooking protrusion 142a is moved upward by means of the elastic body 142e.

[0042] A piston control coil 142f is formed on the bottom surface of the door cylinder 142, which moves the metal piston 142d downward when power is supplied. The piston control coil 142f is connected to a control unit connected to a temperature sensor that senses the temperature of the storage space 120. Thus, when the temperature of the storage space 120 rises above a set temperature, the temperature sensor transmits information of the storage space 120 rising above a set temperature to the control unit, and the control unit supplies power to the piston control coil 142f of the door opening and closing frame 140 provided in the storage space 120 where the temperature rises, so that the metal piston 142d and the hooking protrusion 142a move downward to open the door 130, and when the door 130 is opened, the storage shell 200 of the storage space 120 slides and is discharged to the back of the container 100 and stored in the water tank 300, thereby lowering the temperature.

[0043] The temperature sensor, the control unit, and the piston control coil are components that use electricity as energy, and they may not operate normally depending on the state. Therefore, in order to solve the problem that occurs during abnormal operation, especially the problem that the door 130 is not opened even when the temperature of the storage space 120 rises, the elastic body 142e at the lower part of the door cylinder 142 is composed of beads formed by a resin material, and a fluid is contained therein, and when the temperature is above a predetermined temperature, the fluid contained therein is dissolved and discharged. Thus, when the temperature of the storage space 120 rises, the beads that give elasticity to the metal piston 142b shrink and dissolve, so that the metal piston 142b and the hooking protrusion 142a arranged on the upper part of the metal piston 142b move downward, and the door 130 can be opened and closed.

[0044] In order to conduct the heat of the storage space 120, a heat conduction plate 142 is provided between the door cylinder 142 and the storage space 120, and the door cylinder 142 is formed of a resin material so that when heat exceeding a predetermined capacity is conducted through the heat conduction plate 142, the beads are dissolved and discharged from the door cylinder 142. At this time, the door cylinder 142 is dissolved before the beads, so that the beads are discharged from the door cylinder 142, and the metal piston 142b and the hooking protrusion 142a disposed on the upper part of the metal piston 142b can be moved downward.

[0045] Reference Figure 4A terminal portion 210 for supplying power to the waste batteries stored in the storage housing 200 is provided on one side of the storage housing 200. The terminal portion 210 is composed of a housing terminal portion 210a fixed to the storage housing 200 and a system terminal portion 210b connected to the system, and when the storage housing 200 is arranged in the storage space 120, the housing terminal portion 210a and the system terminal portion 210b should be firmly attached to each other, but in order to make the storage housing 200 slide in the storage space 120 and more easily discharge the storage housing 200, the housing terminal portion 210a and the system terminal portion 210b should be able to be quickly separated.

[0046] Therefore, two or more magnets 214a separated from each other are provided in the shell terminal portion 210a, and a terminal portion metal sheet 214b is provided at a position of the system terminal portion 210b corresponding to the magnet 214a, and when the storage shell 200 is in the storage space portion 120, the shell terminal portion 210a and the system terminal portion 210b are firmly attached, and the shell terminal 212a between the magnets 214a and the system terminal 212b between the terminal portion metal sheet 214b are connected to each other.

[0047] A terminal control coil 216b is provided at a position corresponding to the terminal metal sheet 214b so that when power is supplied, the magnet 214a is pushed to quickly separate the shell terminal 210a from the system terminal 210b, and the terminal control coil 216b is connected to the control unit described above.

[0048] Thus, when the temperature of the storage space 120 rises to a predetermined temperature or higher, the control unit supplies power to the terminal control coil 216 b , thereby enabling the housing terminal 210 a and the system terminal 210 b to be separated more quickly.

[0049] The present invention has been described in detail above through preferred embodiments, but the scope of the present invention is not limited to the specific embodiments and should be interpreted according to the claims. Moreover, those skilled in the art of the present invention should understand that many modifications and variations can be made without departing from the scope of the present invention.

Claims

1. An energy storage system with a fire spread prevention device, characterized in that: include: A container having a plurality of storage spaces formed therein, wherein the front and rear of the storage spaces are connected to receive a storage shell for accommodating waste batteries; A door, the upper end of which is rotatably coupled to the rear of the container and can lock the storage space according to the position of the lower end; as well as a water tank disposed adjacent to the rear surface of the container, so that when the door is opened, the storage housing stored in the storage space portion falls down and is stored; The front end bottom surface of the storage space portion is formed higher than the rear end bottom surface of the storage space portion, and the storage shell is discharged through the back of the container when the door is opened. The water tank stores cooling water.

2. The energy storage system with a fire spread prevention device according to claim 1, characterized in that: The plurality of storage spaces are separated from each other.

3. The energy storage system with a fire spread prevention device according to claim 1, characterized in that: A door opening and closing frame is provided at the rear of the container corresponding to the rear end bottom surface of the storage space portion. The door opening and closing frame is provided with a door cylinder, which is provided with a hanging protrusion which contacts the lower end of the rear surface of the door and limits the opening of the door so as to be movably arranged up and down. A metal piston is provided inside the door cylinder and is coupled to the lower end of the hooking protrusion. An elastic body for imparting elastic force to the metal piston is provided between the metal piston and the inner surface of the door cylinder. The bottom surface of the door cylinder is provided with a piston control coil which moves the metal piston downward when power is supplied, so that when the temperature of the storage space rises above a set temperature, the metal piston moves downward to open the door.

4. The energy storage system with a fire spread prevention device according to claim 3, characterized in that: The elastic body contains fluid inside, and is composed of micro beads formed of a resin material so that it can be dissolved at a predetermined temperature or above and the fluid contained inside can be discharged. A heat conducting plate capable of conducting heat from the storage space is provided between the door cylinder and the storage space. The door cylinder is formed of a resin material so that when heat exceeding a predetermined capacity is conducted through the heat conducting plate, the door cylinder is dissolved and the beads can be discharged.

5. The energy storage system with a fire spread prevention device according to claim 3, characterized in that: A terminal portion for supplying power to the waste batteries stored in the storage case is provided on one side of the storage case. The terminal portion is composed of a housing terminal portion fixed to the housing and a system terminal portion connected to the system. A magnet is provided at the terminal portion of the housing, and a terminal metal sheet is provided at a position of the system terminal portion corresponding to the magnet. A terminal control coil is provided at a position corresponding to the terminal metal sheet for pushing the magnet when power is supplied, so that when power is supplied to the terminal control coil, the housing terminal portion is separated from the system terminal portion.

6. The energy storage system with a fire spread prevention device according to claim 4, characterized in that: A terminal portion for supplying power to the waste batteries stored in the storage shell is provided on one side of the storage shell. The terminal portion is composed of a housing terminal portion fixed to the housing and a system terminal portion connected to the system. A magnet is provided at the terminal portion of the housing, and a terminal metal sheet is provided at a position of the system terminal portion corresponding to the magnet. A terminal control coil is provided at a position corresponding to the terminal metal sheet for pushing the magnet when power is supplied, so that when power is supplied to the terminal control coil, the housing terminal portion is separated from the system terminal portion.

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